{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-98008", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.068Z", "datePublished": "2026-09-25T10:23:33.532Z", "dateUpdated": "2026-10-19T09:12:13.751Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:12:13.751Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: fix NULL pointer dereference on unbind with fixed-link\n\nWhen the device tree describes a fixed-link and has no \"mdio\" child\nnode, macb_mii_init() returns early without allocating the MDIO bus,\nleaving bp->mii_bus as NULL.\n\nTwo cleanup paths then dereference this NULL bus:\n\n1. On driver unbind, macb_remove() unconditionally calls\n mdiobus_unregister(bp->mii_bus), which oopses:\n\n Unable to handle kernel NULL pointer dereference at virtual address 00000000000004a8\n pc : mdiobus_unregister+0x14/0xa4\n lr : macb_remove+0x38/0xa4\n Call trace:\n mdiobus_unregister+0x14/0xa4 (P)\n macb_remove+0x38/0xa4\n platform_remove+0x20/0x30\n device_release_driver_internal+0x1c8/0x224\n unbind_store+0xb4/0xbc\n\n2. On the probe error path in macb_probe(), reached when\n macb_mii_init() has succeeded but a subsequent step fails, the\n err_out_unregister_mdio label runs the same unconditional cleanup.\n\nmdiobus_unregister() and mdiobus_free() do not guard against a NULL\nbus, so guard the calls in both macb_remove() and the probe error\npath." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/cadence/macb_main.c" ], "versions": [ { "version": "831e19e565b5210930fa183730071f8290c61263", "lessThan": "afa224cabc0132ca414b9141b1a919ca2d318cd0", "status": "affected", "versionType": "git" }, { "version": "81db1e52848694761a1aa162ce76198af9964ed8", "lessThan": "054ad8e66025eb4778d840bef80c270646cebcd2", "status": "affected", "versionType": "git" }, { "version": "d0c3601f2c4e12e7689b0f46ebc17525250ea8c3", "lessThan": "f737d999fcb8f276d77b01ea4c2016ee01dad19b", "status": "affected", "versionType": "git" }, { "version": "d0c3601f2c4e12e7689b0f46ebc17525250ea8c3", "lessThan": "5710f6a74f63cbba0e15cd75917234916181c9d4", "status": "affected", "versionType": "git" }, { "version": "d0c3601f2c4e12e7689b0f46ebc17525250ea8c3", "lessThan": "edb39c7666bb3924da761dfb417db85c1e5d8ad3", "status": "affected", "versionType": "git" }, { "version": "d0c3601f2c4e12e7689b0f46ebc17525250ea8c3", "lessThan": "38b6be101006d3e7af972999f45d4f1e8250587a", "status": "affected", "versionType": "git" }, { "version": "cafa5942bd2df3d80e3eeb2deb4bc050f7761f3d", "status": "affected", "versionType": "git" }, { "version": "c81dcaa9cd0b66816c2ecb6c5df0b6afde9c7da5", "status": "affected", "versionType": "git" }, { "version": "19088c5378c9fea54e552d8bc7418a3aa1e06990", "status": "affected", "versionType": "git" }, { "version": "6.1.114", "lessThan": "6.1.189", "status": "affected", "versionType": "semver" }, { "version": "6.6.58", "lessThan": "6.6.158", "status": "affected", "versionType": "semver" }, { "version": "5.10.228", "lessThan": "5.11", "status": "affected", "versionType": "semver" }, { "version": "5.15.169", "lessThan": "5.16", "status": "affected", "versionType": "semver" }, { "version": "6.11.5", "lessThan": "6.12", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/cadence/macb_main.c" ], "versions": [ { "version": "6.12", "status": "affected" }, { "version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.114", "versionEndExcluding": "6.1.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.58", "versionEndExcluding": "6.6.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.12.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.228" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.169" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/afa224cabc0132ca414b9141b1a919ca2d318cd0" }, { "url": "https://git.kernel.org/stable/c/054ad8e66025eb4778d840bef80c270646cebcd2" }, { "url": "https://git.kernel.org/stable/c/f737d999fcb8f276d77b01ea4c2016ee01dad19b" }, { "url": "https://git.kernel.org/stable/c/5710f6a74f63cbba0e15cd75917234916181c9d4" }, { "url": "https://git.kernel.org/stable/c/edb39c7666bb3924da761dfb417db85c1e5d8ad3" }, { "url": "https://git.kernel.org/stable/c/38b6be101006d3e7af972999f45d4f1e8250587a" } ], "title": "net: macb: fix NULL pointer dereference on unbind with fixed-link", "x_generator": { "engine": "bippy-1.2.0" } } } }